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 <title><![CDATA[不带自锁的按钮怎么实现暂停/启动]]></title>
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 <description><![CDATA[两种方法、KEEP或脉冲化[s:21] 

一：

 [attachment=87467] 

二：

 [attachment=87468]&nbsp;&nbsp;]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1380303#1298581.html]]></link>
 <author><![CDATA[蓝色消防栓]]></author>
 <category><![CDATA[欧姆龙工控论坛]]></category>
 <pubdate><![CDATA[Mon, 02 Jul 2012 14:09:41 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[用3个继电器就是实现！不用4个，动一下脑吧！]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1380303#1298548.html]]></link>
 <author><![CDATA[覃艺艺]]></author>
 <category><![CDATA[欧姆龙工控论坛]]></category>
 <pubdate><![CDATA[Mon, 02 Jul 2012 13:27:59 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[用4个继电器可实现！动一下脑吧！]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1380303#1298539.html]]></link>
 <author><![CDATA[shouhai]]></author>
 <category><![CDATA[欧姆龙工控论坛]]></category>
 <pubdate><![CDATA[Mon, 02 Jul 2012 13:13:39 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[方法多用上升沿触发，用KEEP指令]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1380303#1297634.html]]></link>
 <author><![CDATA[rxp]]></author>
 <category><![CDATA[欧姆龙工控论坛]]></category>
 <pubdate><![CDATA[Sun, 01 Jul 2012 02:31:15 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[ld 0.00
difu 20000
ld 20000
out tr0
andnot 1000
set 1000
ld tr0
and 1000
rset 1000]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1380303#1293925.html]]></link>
 <author><![CDATA[wdmzjyxy]]></author>
 <category><![CDATA[欧姆龙工控论坛]]></category>
 <pubdate><![CDATA[Mon, 25 Jun 2012 08:36:49 +0000]]></pubdate>
</item>
<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[!!!!!控制电路全靠自己开发脑筋想!
人家教你一点就一点!要自己灵活运用]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1380303#1291579.html]]></link>
 <author><![CDATA[liaocb]]></author>
 <category><![CDATA[欧姆龙工控论坛]]></category>
 <pubdate><![CDATA[Wed, 20 Jun 2012 14:30:49 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[同楼上的一样用KEEP指令]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1380303#1287407.html]]></link>
 <author><![CDATA[协手闯天下]]></author>
 <category><![CDATA[欧姆龙工控论坛]]></category>
 <pubdate><![CDATA[Wed, 13 Jun 2012 13:26:15 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[用上升沿触发也ok的]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1380303#1287385.html]]></link>
 <author><![CDATA[秋后一点水]]></author>
 <category><![CDATA[欧姆龙工控论坛]]></category>
 <pubdate><![CDATA[Wed, 13 Jun 2012 12:46:48 +0000]]></pubdate>
</item>
<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[双向连锁，就可以了]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1380303#1285585.html]]></link>
 <author><![CDATA[刘永]]></author>
 <category><![CDATA[欧姆龙工控论坛]]></category>
 <pubdate><![CDATA[Sun, 10 Jun 2012 11:21:01 +0000]]></pubdate>
</item>
<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[会了，谢谢，那继电器怎么实现呢]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1380303#1285570.html]]></link>
 <author><![CDATA[jimy1]]></author>
 <category><![CDATA[欧姆龙工控论坛]]></category>
 <pubdate><![CDATA[Sun, 10 Jun 2012 10:45:24 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[PLC的话用（欧姆龙）KEEP、指令就好了]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1380303#1285569.html]]></link>
 <author><![CDATA[诗人的眼泪]]></author>
 <category><![CDATA[欧姆龙工控论坛]]></category>
 <pubdate><![CDATA[Sun, 10 Jun 2012 10:39:27 +0000]]></pubdate>
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<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[你想用PLC实现还是继电器实现呢？ [s:17]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1380303#1285567.html]]></link>
 <author><![CDATA[诗人的眼泪]]></author>
 <category><![CDATA[欧姆龙工控论坛]]></category>
 <pubdate><![CDATA[Sun, 10 Jun 2012 10:36:35 +0000]]></pubdate>
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